What are people using for their default developer module controls?Looks the default values that come with Lightroom have the brightness control at ~ +50 and the contrast at ~ +33.

To have an RAW image come into the developer module and be displayedwith no changes then wouldn't I have to set all these controls including the brightness and contrast to the value of zero?

Why does Adobe pick the defaults to be +50 and +33 for the brightness and contrast respectively?

I am getting better results by adjusting the midtones of an image to the correct level by usingthe exposure slider with the other sliders such as brightness and contrast set to zero and thenusing the curves control to adjust the highlights and the shadows.Is this the preferred way of RAW editing with the developer module?